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1.2 Conservation and dissipation of energy

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Question 31

An electric water pump has a useful power output of 450 W. The efficiency of the pump is 0.75.

What is the total power input to the pump?

[1]
A

563 W

B

1800 W

C

600 W

D

338 W

Markscheme

1.2 Conservation and dissipation of energy Questions

  1. GCSE
  2. /Physics
  3. /1.2 Conservation and dissipation of energy

104 exam-style questions on AQA GCSE Physics 1.2 Conservation and dissipation of energy, covering 1.2.1 Energy transfers in a system and 1.2.2 Efficiency. Each one has a worked solution and a mark scheme showing where the marks go.

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